x86-64: Implement libm IFUNC selectors in C

	* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
	Add s_ceil-sse4_1, s_ceilf-sse4_1, s_floor-sse4_1,
	s_floorf-sse4_1, s_nearbyint-sse4_1, s_nearbyintf-sse4_1,
	s_rint-sse4_1 and s_rintf-sse4_1.
	* sysdeps/x86_64/fpu/multiarch/ifunc-sse4_1.h: New file.
	* sysdeps/x86_64/fpu/multiarch/s_ceil.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_ceilf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_floor.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_floorf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyint.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyintf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_rint.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_rintf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_ceil.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_ceil-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__ceil): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_ceilf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_ceilf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__ceilf): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_floor.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_floor-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__floor): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_floorf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_floorf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__floorf): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyint.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__nearbyint): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_nearbyintf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_nearbyintf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__nearbyintf): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_rint.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_rint-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__rint): Removed.
	* sysdeps/x86_64/fpu/multiarch/s_rintf.S: Renamed to ...
	* sysdeps/x86_64/fpu/multiarch/s_rintf-sse4_1.S: This.  Don't
	include <machine/asm.h> nor <init-arch.h>.  Include <sysdep.h>.
	(__rintf): Removed.

1 files changed, 25 insertions, 0 deletions

diff --git a/sysdeps/x86_64/fpu/multiarch/s_rintf-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_rintf-sse4_1.S
new file mode 100644
index 0000000000..7f47592d8c
--- /dev/null
+++ b/sysdeps/x86_64/fpu/multiarch/s_rintf-sse4_1.S
@@ -0,0 +1,25 @@
+/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gmail.come>, 2011.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+	.section .text.sse4.1,"ax",@progbits
+ENTRY(__rintf_sse41)
+	roundss	$4, %xmm0, %xmm0
+	ret
+END(__rintf_sse41)